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#4809623 - 07/09/18 08:30 PM Sludged filter
jk_636 Offline


Registered: 08/03/14
Posts: 1764
Loc: FEMA Region 4
Viewer discretion advised, those with weak constitutions....look away now. sick

While on vacation a good friend of mine who is not mechanically inclined asked me to take a look at his 2010 Chevy cobalt.

The complaint? Engine “shakes” and races at stop.

Inspection of dipstick revealed clumpy sludge, with no oil reading....

We decided to change the little oil that was left.

When we pulled the cartridge filter this is what we found...



Unsure of how old the filter is or how many miles were on the oil.

Best i can figure this may have been a 3+ year 30,000 mile OCI, with Amsoil as the last known fill.

I would say it was in full bypass, but the bottom of the filter housing had about an inch of standing sludge so who knows?
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#4809628 - 07/09/18 08:36 PM Re: Sludged filter [Re: jk_636]
rooflessVW Online   content


Registered: 12/24/11
Posts: 4299
Loc: North Carolina
Very nice.
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#4809633 - 07/09/18 08:39 PM Re: Sludged filter [Re: jk_636]
parshisa Offline


Registered: 05/21/17
Posts: 587
Loc: TX
Local Chevy dealership in 3 days: CPO Chevy Cobalt - one owner - clean Carfax
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#4809635 - 07/09/18 08:41 PM Re: Sludged filter [Re: jk_636]
edwardh1 Offline


Registered: 01/17/03
Posts: 2975
Loc: Coastal South Carolina
can the friend rear?
ever owned a mechanical machine?
its his problem
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#4809636 - 07/09/18 08:42 PM Re: Sludged filter [Re: jk_636]
Trav Offline


Registered: 11/20/06
Posts: 19280
Loc: MA, Mittelfranken.de
Pay now for a decent oil change or pay a whole lot more for an engine or rebuild later.
This is what happens trying to squeeze every last mile out of the oil and filter. shrug
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#4809642 - 07/09/18 08:47 PM Re: Sludged filter [Re: parshisa]
jk_636 Offline


Registered: 08/03/14
Posts: 1764
Loc: FEMA Region 4
Originally Posted By: parshisa
Local Chevy dealership in 3 days: CPO Chevy Cobalt - one owner - clean Carfax


One owner....clean carfax.... LOL
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#4809648 - 07/09/18 08:55 PM Re: Sludged filter [Re: edwardh1]
maxdustington Online   content


Registered: 01/21/17
Posts: 843
Loc: Toronna
Originally Posted By: edwardh1
can the friend rear?
ever owned a mechanical machine?
its his problem

Can the friend even OCI?
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#4809650 - 07/09/18 09:01 PM Re: Sludged filter [Re: jk_636]
Pajero Online   content


Registered: 05/05/12
Posts: 946
Loc: Rio Rancho, NM
He needs to follow the three month, 3000 mile OCI. After the engine is clean. Keep it simple!



Respectfully,


Pajero!
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#4809662 - 07/09/18 09:15 PM Re: Sludged filter [Re: Pajero]
turtlevette Offline


Registered: 12/24/13
Posts: 3649
Loc: Massachusetts
I thought amsoil is supposed to be able to go 25k miles. Do you have a picture of the drained oil?

This is why I like running the biggest filter possible




Edited by turtlevette (07/09/18 09:19 PM)
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#4809665 - 07/09/18 09:17 PM Re: Sludged filter [Re: jk_636]
Danno Offline


Registered: 10/07/12
Posts: 2021
Loc: Northern Ontario, Canada
I had a sludged up filter in a 2008 2.2L Cobalt. Used PP 5W-30, and Bosch filter. It was run in the winter for 3,000 miles, for 6 months. Cold winter to -30C and short trips. Wasn't nearly as bad as this one but the filter was starting to collapse.
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#4809666 - 07/09/18 09:18 PM Re: Sludged filter [Re: jk_636]
Chris142 Online   content


Registered: 06/05/03
Posts: 16946
Loc: Deplorable in apple valley, ca
I'm sure that mess went through everything. The bearings will be down to the copper etc.
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#4809673 - 07/09/18 09:26 PM Re: Sludged filter [Re: jk_636]
Zee09 Offline


Registered: 05/05/18
Posts: 466
Loc: Tri State Conservative
That filter still had life in it.
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#4809688 - 07/09/18 09:38 PM Re: Sludged filter [Re: jk_636]
michaelluscher Offline


Registered: 10/07/12
Posts: 2436
Loc: Staten Island, NY
I can still see pleats

You worry too much.... grin
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#4809708 - 07/09/18 09:57 PM Re: Sludged filter [Re: jk_636]
andyd Online   content


Registered: 09/25/04
Posts: 7253
Loc: Marshfield , MA
A series of 3k OCIs is gonna do anything significant for that mess? Really How many changes will it take to clean that mess up?
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#4809714 - 07/09/18 10:01 PM Re: Sludged filter [Re: Chris142]
jk_636 Offline


Registered: 08/03/14
Posts: 1764
Loc: FEMA Region 4
Originally Posted By: turtlevette
I thought amsoil is supposed to be able to go 25k miles. Do you have a picture of the drained oil?



Oh yeah thats right...maybe he should call Amsoil and see if they will provide him a new engine... crazy


I don't have a picture of the drained oil...but about a quart and change drained with the consistency of room temp honey and had that acidic nasty smell.





Originally Posted By: Chris142
I'm sure that mess went through everything. The bearings will be down to the copper etc.


I can only imagine . I wish I would have saved a sample for a UOA from Blackstone, but it didn't cross my mind at the time.
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